We thank all the colleagues who put specimens at our disposal (Table S7). We are indebted to H.A. Thomassen and R. Glas (Leiden) for some of the labwork carried out in the early stages of this project. Finally we like to thank Dr. Neubert (Dr. E. Neubert (Bern), Dr. A.A. Schileyko (Moscow) and two anonymous reviewers for their remarks and constructive comments on an earlier version of this manuscript.
Received: 6 April 2014
Revised and accepted: 28 August 2015
Published online: 28 January 2016
Editor: J.W. Arntzen